"But I do know, every time out, the guy comes and fights. If he is the guy, then he's the guy [to fight next]. There's nothing I can do but go out there and execute the game plan and dedicate myself to the craft, which is boxing."

Khan suffered back-to-back losses to Lamont Peterson and Danny Garcia in 2011 and 2012, but bounced back with wins over Carlos Molina and Julio Diaz.

And when the unbeaten Mayweather Jr was asked about Khan's abilities as a fighter, he said: "I think he's a young, strong champion. I call these guys champions. I call them champions because even when they get knocked down they get back up and give it their best."